Open-hearth-furnace device



A. ARTHUR.

OPEN HEARTH FURNACE DEVICE.

APPLICATION FILED FEB. 7. I92].

1,41 4,45 1. Patented May 2, 1922.

2 S HEETS SHEET 2.

A INVENTOR OPEN-HEAiiTEFTfRNACEDEVICE i Application filed February ira. ,steam; 913,001 f f To all w/iomit may concern: r 1

'Be it known that ALEXANDER AR R,

Y citizen of the United States of America,"re-

siding at Youngstown, in the county of Mahoning and State of Ohio, has invented ,ceitain new and useful Improvements in Open-Hearth-Furnace Devices, of which the following is a specification.

This invention-relates to monly known as open to furnaces of'like nature.

. what is comnozzles and opposed air passages, the-products ofv combustion, after-passing through the. hearth chamber, beingfdrawnj oif through both the air passages andthe gas nozzle. It is common to provide sucha'furnace with a reversing gear so that for a desired length of time the gas and air are takenin at one end of the furnace and the products of combustion escape through the air passages and gas nozzle. Then the furnace is reversed and the intake end becomes the outlet.

end, etc. r I

The principal object of my invention is to utilize the ordinary method of air feed above the gas port and at the same time use a supply of preheated air, and mixing this air with the gas in the port.

Another object is to provide a means of utilizing the waste heat carried out-with the products'of combustion at the outlet end. In order to do this Ihave provided a twoway tortuous passage in the division Wall which separates the gas slag pocket and the This division wall becomes air slag pocket. very hot and by bringing air into this passage theair becomes heated and is then'carried through two upward passages through the side walls of the'gas portand is mixed with the gas in the port.

Another object is to provide a means of lengthening the life of the division and! 7 outer walls.

V meansof reversing the incoming air in said A still further objectis to provide. a

proceeds, the invention resides in the com-' bination and arrangement of parts and in 1 Specification r Letters Patent; .7

arth furnaces a-nd t H l v f f lf gurefl 11s asect onal view offan endo'f Furnacesofthisitype employ opposed gas ganrjgpen, h a h hirn ceshewin the 7 two tortuouspassages'i'n thQdlVlSlOIl wall, and

objects in Patel .tli dm stfi i iwt o ih eina er scr bed and claii ied', it being understood that changes" in "the precise embodiment of lthei'invention'herein disclosed, can be made 5 witfl i i thescopefof'f what is 'claimed, witl out departing "from the spirit of the inve tion. a

, the passages leading into f the side; walls the port? rr-gum- 2 is a--sec'tional 'view of an end or anopen hearth furnace showing the d vision Wall, and side of gas port.

Referring to the drawings in which the same reference characters relate to. the same or corresponding parts-in all the views, 1' V I i ter'ial.

or any suitable material having the property of withstanding great heat. sents an ordinary chill box located under In'the: accompanying" drawings the 'preffer'red formof the invention has beenshow i,

The side walls 5 may be constructed of the same ma- I The inner walls 6 and the division wall 1 should be constructed of silica brick 7 repre- UNITED STATES fP ATENTf orricE.*-

the port 8. This chill box 7 is covered withfi a brick construction 9 and over this the furnace lining material 10. 1 By referring to Figure 1 it will be seen that I have provided a fanll providedwith a valve 12. Leading from this fan 11,1 have provided ia tube 13 for carryingthe air to the tortuouspaths 14fand-15. The

drawing ,shows a valve 16; set so that the airenters thetortuous path 14 and thisair and the division wall 1 are subjected to great heat when the products of combustion i are escaping on either side 'of the division wall '1 when the port at the opposite end Now the of the furnace is used as the exit. heated air passes through the air passages 17 which leads to and through .thetwo sides of the port 8 at openings 18 where the incoming gas and air are. mixed before entering thefurnace. The gas is-led into the port in the ordinary way through a pas? sage 19'.

vice, that is, the air enteringthrough' the In an ordinary'furnacethe air is led into passage 20 and over the port 8, into the space 21 above the port 8.

Now when the valve 16 is turned up,

against the end 22 of the-tortuous path 14 the air enters the tortuous path 15.

The

object in using a plurality of tortuous paths for the air is to utilize to a greater degree;

the heat that would otherwise be wasted;

In order to utilize this aste of heat in this manner the air is carried first through one tortuous path and the next time through the other tortuous path. The openings 23 may be closed if desired, or used to insert a pyroineter, or to carry intothe port 8 other fuels.

By mixing the heated air with the gas in the port 8 a better combustion takes place and at a point in the furnace near the end of the port 8 While the air that enters in the ordinary Way abovethe port 8 is at the same time utilized. One of the objections to the method of using air coming from above the port is that the intense heat of combustion which takes place far into the l furnace causes a great heatat the exit end of the furnacawhich is detrimental to the furnace.

Having thus described'my inventionwhat I claim is:

1. In a device of theclass described, a

partition Wall separating a gas slag pocket and an air slag pocket, said partition Wall provided With a plurality of tortuous paths,

'2. In a device of the class described, a fan,

a tube, leading to a plurality'of tortuous paths located Within a partition Wall,'fair passages leading to an opening on each side of a gas port, substantially as described.

tortuous In testimony whereof I aflix my signature.

Witnesses:

JOHN P. MEYER, C. A. HARPMAN .ALEXANDER ARTHUR. I 

